Column-clamp.



- PATENTED'MAY 12, 1903.

A. A. LOETSGHER. 1

COLUMN CLAMP.

BY g

A TTOHNE YS.

No. 722cm.

iiiii Tans Patented May 12-,- 1903.

n'rs r concern-c emo.

SPECIFICATION forming part of Letters Patent No. 727,651, dated May 12, 1903.

Application filed July 10, 1902. Serial No. 115,046. (No model.)

To MZ whom it may concern: Beit known that LANDREW A. Lonrsonnn, a citizen of the United States, and a resident of Dubuque, in the county of Dubuque and State of Iowa, have invented a new and Improved Column-Olamp, of whichthe folloiving is a full, clear, and exact description. My invention relates to column-clampsthat is, to devices used for clamping together heterogeneous masses of material, such as the panels of a column or post, staves of a tank, and analogous structures.

Reference is to be had to the accompanying drawings, forminga part of this specification,

in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is a fragmentary elevation, partly in section, showingmy invention in use and employed in drawing together the loose parts of a column. Fig. 2 is a fragmentary elevation taken at rightangles to the view shown in Fig. 1; and Fig. 3 is a fragmentary elevation, certain parts being shown in section upon the line or a: in Fig. 1 looking in direction of the arrows. I An endless longitudinal member I, preferably a stout chain, is provided with a clamp a lug mechanism for virtually lengthening and shortening said chain. The chain is placed about the panels or staves '2 of the column, tank, or similar structure and is used to grip the several parts tightly together for divers purposes required in the art. Upon each end of the chain-1 are mounted blocks 8 4, preferably made of malleable iron, the block 3 being provided with a-slot 5, through which passes a pivot-pin 6, engaged by the terminal link of the chain, as indicated in Fig. 1. The block 4 is provided with a hook P, which engages the chain, but at a point intermediate of its ends, as indicated in Fig. 1. The superflous links 1 of the chain may be allowed to simply hang down or may be used,

" if desired, for the purpose of subsequently lifting the column from the bench or trestle while the glue is undergoing the drying process. The block 3 is also provided with a slot 7, larger than the slot 5, as shown more par ticularly in Fig. 2. The block 4 is likewise provided with a slot 8, somewhat similar to the slot 7, as shown more particularly in Fig. 2.

'screw the-last few turns.

J ournaled within the blocks 3 4. are swivels 9 10, made, preferably, of steel and threadedv internally. Those swivels are connected by a screw 11, which is provided with right-and left threads v12 13, which are mated by the threads of the respective swivels. The screw 13 is rotated by means of a T-shapdd handle consisting of a central stem 14 and a crosspiece 15, the central stem 14 terminating in a slotted head 16, which passes over the screw 1'1 and is engaged bya pivot 18. The arrangement is such that the T-shaped handle, which normally occupies such a position that the central stem 14 is in axial alinement with the longitudinal screw 11, may be moved radially.

upon the pivot 18, so that the operative may fold the handle in different positions, therebyx,

increasing the leverage in tightening the The bearing-surfaces 19 20 of the blocks 3 a are slightly'concave, so as to readily engage either cylindrical or flat surfaces.

Oneimportant feature of my invention is the fact that the chain is provided with links large enough and otherwise adapted to engage the hook at for the purpose of readily taking up superfluous slack of the chain, while one end of the chain is permanently connected with the pivot 6 of the block 3. The handle may be readily folded out of the way when the device is not in use.

My device is used as followszThe chain is thrown loosely around the object to be clamped, and the screw is rotated in the proper direction to move the bPocks asunder to a claim as new and desire to secure byLetters 1. Acolumn clam'p, comprisingtwoblocks, an apertured swivel mounted in each block, the apertures of said swivels being provided with right and left threads, a right and left head screw working in theapertures of the swivels of the blocks, and a flexible member having one end fixedly secured to one of the blocks and its other end detachably connected with the other block.

2. A column-clamp com prising a longitudinal chain, a block permanently connected with one of the ends thereof, a second block provided with an,integral hook adapted to engage the individual links of said chain at divers points intermediate of the length thereof, said blocks being provided with slightlyconcave bearing-surfaces for engaging structures of different shapes, a pair of swivels mounted within said blocks and provided with right and left threads, a screw ovided with right and left threads mating the threads of said swivels, and mom 3 by which the said screw may be turned.

3. A column-clamp comprising a longitudinal chain, a block permanently connected with one of the ends thereof, a second block provided with an integral hook adapted to engage the individual links of said chain at divers points intermediate of the length thereof, said blocks being provided with slightlyconcave bearing-surfaces for engaging structures of different shapes, a pair of swivels mounted within said blocks and provided with right and left threads, a screw provided with right and left threads mating the threads of said swivels, and a T-shaped handle pivotally mounted upon said screw for turning the same, and free to fold when not in use.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ANDREW A. LOETSCIIER. \Vitnesses;

HOWARD B. SALO'r, MINA SCHNEIDER. 

